Finding the Fourth Proportional to 76,896.97, 106,264.51 and 55,457.08
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Solution
The fourth proportional to 76,896.97, 106,264.51 and 55,457.08 is: 76,636.56
Step by Step Solution
- Step 1: Write the proportion equation
76,896.97 : 106,264.51 = 55,457.08 : x - Step 2: Convert to fraction form
76,896.97/106,264.51 = 55,457.08/x - Step 3: Cross multiply
76,896.97x = 106,264.51 × 55,457.08 - Step 4: Simplify right side
76,896.97x = 5,893,119,326.80 - Step 5: Solve for x
x = 5,893,119,326.80/76,896.97 - Step 6: Final answer
x = 76,636.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.